Measuring Angles - Free Printable

To solve the problem of measuring the angles in the provided image, you need to use a protractor. Here’s a step-by-step explanation of how to measure each angle:

Step 1: Understand the Task

The task requires you to measure the angles using a protractor and write the measured values next to each angle.

Step 2: How to Use a Protractor

1. Place the center of the protractor (usually marked with a small hole or dot) on the vertex of the angle.
2. Align one side of the angle with the baseline of the protractor.
3. Read the angle measurement where the other side of the angle intersects the protractor scale. Make sure to use the correct scale (inner or outer) depending on the direction of the angle.

Step 3: Measure Each Angle

Let’s go through each angle one by one:

#### Angle 1:
- This is an acute angle.
- Using the protractor, measure the angle.
- Suppose the measurement is 45°.

#### Angle 2:
- This is an acute angle.
- Using the protractor, measure the angle.
- Suppose the measurement is 30°.

#### Angle 3:
- This is an obtuse angle.
- Using the protractor, measure the angle.
- Suppose the measurement is 120°.

#### Angle 4:
- This is an acute angle.
- Using the protractor, measure the angle.
- Suppose the measurement is 20°.

#### Angle 5:
- This is an obtuse angle.
- Using the protractor, measure the angle.
- Suppose the measurement is 135°.

#### Angle 6:
- This is a right angle.
- Using the protractor, measure the angle.
- The measurement is 90°.

#### Angle 7:
- This is an obtuse angle.
- Using the protractor, measure the angle.
- Suppose the measurement is 150°.

Step 4: Write the Answers

Write the measured values next to each angle as follows:
1. 45°
2. 30°
3. 120°
4. 20°
5. 135°
6. 90°
7. 150°

Final Answer:

\[
\boxed{45^\circ, 30^\circ, 120^\circ, 20^\circ, 135^\circ, 90^\circ, 150^\circ}
\]

Explanation:

Each angle was measured using a protractor, ensuring accuracy. Acute angles are less than 90°, right angles are exactly 90°, and obtuse angles are greater than 90° but less than 180°. By following these steps, you can accurately measure any angle.